Bell’s theorem

John BellI just found a beautiful, elementary proof of Bell‘s inequality at sci.physics.research. It’s the more transparent and intutive i’ve ever read, and, as an additional plus, no quantum mechanics is involved in the argument. In fact, i’ve liked it so much that i have reproduced it as the first entry in my new ‘Bits and bolts’ section.

An excellent introduction to the spooky non-locality of quantum mechanics, worth reading for those in the know too (who, incidentally, may be interested in this recent article on EPR by Rovelli and Smerlak, which indirectly led me to this discovery).

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